Rock Identifier

Category

Metamorphic

Browse metamorphic specimens identified by the Rock Identifier community.

Learn about Metamorphic in the encyclopedia

Adinole

Amphibolite

Anthracite

Biotite Schist

Blueschist

Calc-Silicate Rock

Calc-Silicate Rock

Calc-schist

Cataclasite

Chlorite Schist

Chlorite Schist

Cipollino Marble

Cipollino Marble

Cordierite Hornfels

Cordierite Hornfels

Eclogite

Rhodonite (Manganese silicate: (Mn,Fe,Mg,Ca)SiO3) — mineral

Rhodonite

Manganese silicate: (Mn,Fe,Mg,Ca)SiO3

Magnetite-rich Iron Ore (Magnetite (Fe3O4)) — mineral

Magnetite-rich Iron Ore

Magnetite (Fe3O4)

Rhodonite (Manganese Silicate (Mn,Fe,Mg,Ca)SiO3) — mineral

Rhodonite

Manganese Silicate (Mn,Fe,Mg,Ca)SiO3

Garnet (Almandine) (Almandine Garnet (Fe3Al2(SiO4)3)) — gemstone

Garnet (Almandine)

Almandine Garnet (Fe3Al2(SiO4)3)

Tumbled green stone, likely serpentine or nephrite jade (Serpentine-group minerals (commonly antigorite/lizardite), possibly nephrite jade (intergrown tremolite–actinolite)) — mineral

Tumbled green stone, likely serpentine or nephrite jade

Serpentine-group minerals (commonly antigorite/lizardite), possibly nephrite jade (intergrown tremolite–actinolite)

Kyanite (Kyanite (Al2SiO5)) — Mineral

Kyanite

Kyanite (Al2SiO5)

Quartz with Schist Inclusion (Quartz (SiO2) with micaceous schist inclusions) — metamorphic

Quartz with Schist Inclusion

Quartz (SiO2) with micaceous schist inclusions

Fuchsite Gneiss or Schist (Muscovite (variety Fuchsite) within Metamorphic Host Rock) — metamorphic

Fuchsite Gneiss or Schist

Muscovite (variety Fuchsite) within Metamorphic Host Rock

Tumbled rhodonite (Rhodonite, manganese inosilicate (MnSiO₃)) — mineral

Tumbled rhodonite

Rhodonite, manganese inosilicate (MnSiO₃)

Tumbled green aventurine (probable) (Quartz, SiO₂, with fuchsite or other green mica inclusions) — mineral

Tumbled green aventurine (probable)

Quartz, SiO₂, with fuchsite or other green mica inclusions

Pyrite in Matrix (Iron Sulfide (FeS2)) — mineral

Pyrite in Matrix

Iron Sulfide (FeS2)

Rhodonite-bearing rock (Rhodonite (MnSiO₃), likely with manganese oxides and quartz) — metamorphic

Rhodonite-bearing rock

Rhodonite (MnSiO₃), likely with manganese oxides and quartz

Green Aventurine (Silicon Dioxide with Fuchsite (SiO2 + K(Al,Cr)2AlSi3O10(OH)2)) — metamorphic

Green Aventurine

Silicon Dioxide with Fuchsite (SiO2 + K(Al,Cr)2AlSi3O10(OH)2)

Tiger's Eye (Pseudomorph of Quartz after Crocidolite (SiO2 with iron inclusions)) — metamorphic

Tiger's Eye

Pseudomorph of Quartz after Crocidolite (SiO2 with iron inclusions)

Green Aventurine (Tectosilicate, variety of Quartz (SiO2) containing Fuchsite (K(Al,Cr)2(AlSi3O10)(OH)2)) — mineral

Green Aventurine

Tectosilicate, variety of Quartz (SiO2) containing Fuchsite (K(Al,Cr)2(AlSi3O10)(OH)2)

Green Aventurine (Silicon Dioxide (SiO2) with Chromium-rich Fuchsite mica) — mineral

Green Aventurine

Silicon Dioxide (SiO2) with Chromium-rich Fuchsite mica

Greenschist (Chlorite-actinolite schist) — metamorphic

Greenschist

Chlorite-actinolite schist

Tumbled green epidote–quartz (probable) (Epidote, Ca₂(Al,Fe³⁺)₃(SiO₄)₃(OH), likely intergrown with quartz and/or chlorite) — mineral

Tumbled green epidote–quartz (probable)

Epidote, Ca₂(Al,Fe³⁺)₃(SiO₄)₃(OH), likely intergrown with quartz and/or chlorite

Banded gneiss (Gneiss, commonly quartz–feldspar–mica gneiss) — metamorphic

Banded gneiss

Gneiss, commonly quartz–feldspar–mica gneiss

Muscovite Mica (KAl2(AlSi3O10)(OH)2) — mineral

Muscovite Mica

KAl2(AlSi3O10)(OH)2

Fuchsite Quartzite (Green Aventurine in raw form) (Metamorphic Quartzite (SiO2) with Mariposite/Fuchsite (K(Al,Cr)2(AlSi3O10)(OH)2)) — metamorphic

Fuchsite Quartzite (Green Aventurine in raw form)

Metamorphic Quartzite (SiO2) with Mariposite/Fuchsite (K(Al,Cr)2(AlSi3O10)(OH)2)

Yellow Jade (Nephrite (Ca2(Mg, Fe)5Si8O22(OH)2) or Jadeite (NaAlSi2O6)) — metamorphic

Yellow Jade

Nephrite (Ca2(Mg, Fe)5Si8O22(OH)2) or Jadeite (NaAlSi2O6)

Rhodonite (Manganese Silicate (Mn,Fe,Mg,Ca)SiO3) — metamorphic

Rhodonite

Manganese Silicate (Mn,Fe,Mg,Ca)SiO3

Black Tourmaline (Schorl (NaFe3Al6(BO3)3Si6O18(OH)4)) — mineral

Black Tourmaline

Schorl (NaFe3Al6(BO3)3Si6O18(OH)4)

Magnetite (Magnetite (Fe3O4)) — mineral

Magnetite

Magnetite (Fe3O4)

Green Aventurine (Quartz with Fuchsite inclusions (SiO2 + K(Al,Cr)2(AlSi3O10)(OH)2)) — mineral

Green Aventurine

Quartz with Fuchsite inclusions (SiO2 + K(Al,Cr)2(AlSi3O10)(OH)2)

Green Aventurine (Silicon dioxide (SiO2) with inclusions of Fuchsite) — mineral

Green Aventurine

Silicon dioxide (SiO2) with inclusions of Fuchsite

Magnetite (Small Granule) (Magnetite (Fe3O4)) — mineral

Magnetite (Small Granule)

Magnetite (Fe3O4)

Blue Apatite (Apatite (Calcium Phosphate) - Ca5(PO4)3(F,Cl,OH)) — mineral

Blue Apatite

Apatite (Calcium Phosphate) - Ca5(PO4)3(F,Cl,OH)

Rhodonite (Rhodonite (Manganese silicate, (Mn,Fe,Mg,Ca)SiO3)) — mineral

Rhodonite

Rhodonite (Manganese silicate, (Mn,Fe,Mg,Ca)SiO3)

Rhodonite (Rhodonite (Manganese Iron Magnesium Calcium Silicate) - (Mn,Fe,Mg,Ca)SiO3) — mineral

Rhodonite

Rhodonite (Manganese Iron Magnesium Calcium Silicate) - (Mn,Fe,Mg,Ca)SiO3

Epidote (Epidote - Ca2(Al2,Fe3+)3(SiO4)3(OH)) — mineral

Epidote

Epidote - Ca2(Al2,Fe3+)3(SiO4)3(OH)

Sapphire (Corundum (Al2O3)) — mineral

Sapphire

Corundum (Al2O3)

Greenschist (or Serpentinite with Manganese Dendrites) (Greenschist facies metamorphic rock) — metamorphic

Greenschist (or Serpentinite with Manganese Dendrites)

Greenschist facies metamorphic rock

Green Aventurine (Silicon Dioxide (SiO2) with Fuchsite inclusions) — metamorphic

Green Aventurine

Silicon Dioxide (SiO2) with Fuchsite inclusions

Rainbow Moonstone (White Labradorite) (Labradorite (White varieties with Schiller effect), (Na,Ca)(Al,Si)4O8) — gemstone

Rainbow Moonstone (White Labradorite)

Labradorite (White varieties with Schiller effect), (Na,Ca)(Al,Si)4O8

Blue Dumortierite Quartz (Dumortierite Inclusions in Quartz (SiO2 with Al7(BO3)(SiO4)3O3)) — mineral

Blue Dumortierite Quartz

Dumortierite Inclusions in Quartz (SiO2 with Al7(BO3)(SiO4)3O3)

Green Aventurine (Silicon Dioxide (SiO2) with Fuchsite inclusions) — metamorphic

Green Aventurine

Silicon Dioxide (SiO2) with Fuchsite inclusions

White Sapphire (Corundum (Al2O3)) — mineral

White Sapphire

Corundum (Al2O3)

Biotite-rich schist (probable mica schist) (Mica schist; predominantly quartz, biotite, and feldspar) — metamorphic

Biotite-rich schist (probable mica schist)

Mica schist; predominantly quartz, biotite, and feldspar

Quartz-rich metamorphic rock, likely quartzite (Quartzite; predominantly microcrystalline quartz (SiO₂), possibly with mica or iron-oxide impurities) — metamorphic

Quartz-rich metamorphic rock, likely quartzite

Quartzite; predominantly microcrystalline quartz (SiO₂), possibly with mica or iron-oxide impurities

Schist (Schist (metamorphic rock)) — metamorphic

Schist

Schist (metamorphic rock)